Description
The Trane VAL11914 is a Thermostatic Expansion, measuring 1/2 ” x 5/8” that fits with 8 ton HVAC system. It’s an AC valve that regulates the differentiation of coolant in an air conditioning system. The setting of expansion devices is to adjust the rate of refrigerant flow into the coil for cooling. The valve uses a detecting bulb which is filled with refrigerant. The pressure in the detecting bulb drops when the refrigerant in the coil becomes cold and takes heat from the house. Due to this pressure drop the valve opens to allow more liquid refrigerant to enter the evaporator coil. The refrigerant evaporates and turns into gas as the absorbs more heat.
